Finding the Third Proportional to 3,504,149 and 3,872,789

Step by Step Solution

1. Step 1: Write the proportion equation
   3,504,149 : 3,872,789 = 3,872,789 : x
2. Step 2: Convert to fraction form
   3,504,149/3,872,789 = 3,872,789/x
3. Step 3: Cross multiply
   3,504,149x = 3,872,789 × 3,872,789
4. Step 4: Simplify right side
   3,504,149x = 14,998,494,638,521
5. Step 5: Solve for x
   x = 14,998,494,638,521/3,504,149
6. Step 6: Final answer
   x = 4,280,210.30